News

What is an LED floodlight?

Update:23 Mar 2019
Summary:

A floodlight is a luminaire that specifies that the ill […]

A floodlight is a luminaire that specifies that the illumination on the illuminated surface is higher than the surrounding environment. LED factory shed lamp price, LED industrial and mining lamp price, industrial and mining lamp manufacturer sales also known as spotlight. Typically, it can be aimed in any direction and has structures that are unaffected by climatic conditions. Mainly used for large-area mines, building outlines, stadiums, overpasses, monuments, parks and flower beds. Therefore, almost all large-area lighting fixtures used outdoors can be regarded as spotlights. The angle of the exit beam of the floodlight is narrow and narrow, ranging from 0° to 180°. The beam is particularly narrow and is called a searchlight.

LED flood light classification

1, rotational symmetry

The luminaire employs a rotationally symmetric reflector and mounts the axis of symmetry of the source with a rotationally symmetric light distribution along the axis of the reflector. The iso-intensity curves of such lamps are concentric. In the case of single-lamp illumination, the illumination spot on the illuminated surface has an illuminating unevenness, but when the illumination is multi-lighted, the spots are superimposed on each other to produce a satisfactory illumination effect. For example, hundreds of rotating symmetrical spotlights are commonly used in stadiums and installed on high towers around the stadium to achieve high illumination and high uniformity.

2, two symmetrical plane shapes

The iso-intensity curve of this type of floodlight has two planes of symmetry. Most of the luminaires use a symmetrical cylindrical reflector and the linear light source is mounted along the cylinder axis.

3, a symmetrical plane shape

The equal intensity curve of the luminaire has only one symmetry plane (Fig. 2). The luminaire uses an asymmetric cylindrical reflector or a symmetrical cylindrical reflector plus a grid that limits light. The most typical is the sharp cut-off block retracting light distribution. Such a light intensity distribution single lamp can obtain a satisfactory illumination distribution.

4, asymmetric shape

The iso-intensity curves of such lamps do not have a plane of symmetry. It is mainly used for light-mixing lamps of different kinds of light sources with different light intensity distributions and special lamps designed according to the specific lighting requirements of the place of use.